<%@ page import="java.sql.Connection" %>
<%@ page import="java.sql.Statement" %>
<%@ page import="java.sql.ResultSet" %>
<%@ page import="java.sql.DriverManager" %>
<%@ page import="java.util.List" %>
<%@ page import="java.util.ArrayList" %><%--
  Created by IntelliJ IDEA.
  User: Administrator
  Date: 2018/5/3
  Time: 16:26
  To change this template use File | Settings | File Templates.
--%>
<%@ page contentType="text/html;charset=UTF-8" language="java" %>
<html>
<head>
    <title>Title</title>
</head>
<body>

<style type="text/css">

    table{
        border-collapse: collapse;
    }
td{
    border:1px solid #000;
    padding: 10px;
}

</style>

<table>

    <tr>
        <td>编号</td>
        <td>用户名</td>
        <td>密码</td>
        <td>操作1</td>
        <td>操作2</td>
    </tr>
<%
    //脚本
    // 3+1 从数据库查数据
    Connection connection = null;
    Statement statement = null;
    ResultSet resultSet = null;

    String sql = "select * from t_users";

    // 加载驱动程序
    Class.forName("com.mysql.jdbc.Driver");

    connection = DriverManager.getConnection(
            "jdbd:mysql://localhost:3306/sctu_javaweb_2018?serverTimezone=UTC",
            "root",
            "123456" // 大家的密码是：123456
    );
   statement = connection.createStatement();
   resultSet = statement.executeQuery(sql);

   class User{

       int id;
       String username;
       String password;
   }

    List<User> userList = new ArrayList<User>();

    while (resultSet.next()){

        int id = resultSet.getInt(1);
        String username = resultSet.getString(2);
        String password = resultSet.getString(3);

        User user = new User();
        user.id = id;
        user.username = username;
        user.password = password;

        userList.add(user);
    }

    resultSet.close();
    statement.close();
    connection.close();

    for (User u : userList){

        out.write(
                        "<tr>"+
                        "<td>"+u.id+"</td>"+
                        "<td>"+u.username+"</td>"+
                        "<td>"+u.password+"</td>"+
                        "<td>删除</td>"+
                        "<td>更新</td>"+
                        "</tr>" );
        }
 %>
</table>

</body>
</html>
